Ćw. 2.36.

13⁴ * 15⁴ =
(¹/₃)⁶ * 3⁶ =
(-1)¹⁰ * 12¹⁰ =
3⁸ * 4⁴ =
81¹² * 3⁴⁸ =
625⁴ * 5⁸ =